Draft-equalizer.



No. 721,034. PATENTED vPETE. 17,1903.

P. J. GRADY. DRAFT EQUALIZER.

" APPLIGATION FILED NOV. 21, 1802.

H0 MODEL.

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UNITED STATES PATENT OFFICE.

PATRICK J. GRADY, OF TURTLE RIVER, MINNESOTA.

DRAFT- EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 721,034, dated February17 1903.

Application filed November 21,1902. Serial No. 132,288. (No model.)

a Minnesota, haveinvented new and useful Improvements inDraft-Equalizers, of which the following is a specification.

This invention relates to a draft-equalizer; and the primary object ofthe same is to provide a simple and efiective construction whereby sidedraft will be prevented and pulling strain more uniformly distributed onopposite sides of the pole.

The invention consists in the construction and arrangement of theseveral parts, which will be more fully hereinafter described andclaimed.

The accompanying drawing represents a perspective view of adraft-equalizer embodying the features of the invention.

The numeral 1 designates a draft beam or pole having a cross-bar 52secured thereto at a point in advance of the rear end of the same, saidcross-bar being projected a greater distance at one side of the polethan at the other side thereof and having the outer ends formed withhorizontal slots 3, in which are movably mounted horizontally-disposedsheaves or pulleys at. The upper side of the bar between its oppositeextremities has a recess 5 formed therein, so that the pole or beam 1will be slightly countersunk in relation to the bar for convenience inapplying the draft devices and in attaching the draftanimals to theforward extremity of the pole.

Secured to and extending at right angles from the rear end of the beamor pole 1 and having its edges disposed in a vertical direction is aright-angular support 6, which extends exclusively beyond the side ofthe beam or pole 1 from which the shortest part of the bar 2 projects,and extending from the outer end of the support 6 to the side edge ofthe beam or pole 1 in advance of the point of attachment of the latterto the bar 2 isa diagonal brace 7. The support 6 has a slot 8 therein ata distance from the rear end of the beam or pole l, and in said slot asheave or pulley 9 is horizontally disposed. The support 6 is of greatervertical extent than the correstood by those skilled in the art.

sponding vertical thickness of the draft beam or pole l, and a part ofsaid support depends below the under surface of the said beam or pole.The slot 8 is formed at about a central point in the support, verticallyconsidered, and the sheave or pulley 9 is in approximately the samehorizontal plane as the sheaves or pulleys-4. Carried by the ends of thebar 2 and engaging the sheaves or pulleys 4 and 9 is a draft-equalizingrope or cable 10, having the extre mitiesthereof passed through the endsof the bar2 and provided with at taching-rings 11 to receive the hooksor other devices of double and single trees of such a nature as toprovide a four-horse evener to arrange a greater number of animals onone side of the beam or pole 1 than on the other side of the latter, asWill be readily under- It will be seen that the pulling strain imposedupon the equalizer or even-er by the draft-animals will be largelyremoved from the ends of the bar 2 and imposed upon the rear end of thebeam or pole 1 through the support 6 and also on a part of the said beamor pole in advance of the point of attachment of the latter to the bar 2through the medium of the brace 7. It will also be observed that thedraft rope or cable 10 is free to slide through the parts it engages,and to prevent the bar 2 from bending and fracturing angularly-disposedbraces 12 are connected to the beam 1 in rear of the point of attachmentof the same to the bar 2 and to the outer ends of the said bar.

The advantages of the improved device are numerous, and one of the mostessential is the arrangement of the draft rope or cable 10 so that itwill move through the ends of the bar 2. A further advantage is that thesingle or double tree devices that are used in connection with theequalizer or evener will not be attached to the bar 2 direct; but thedraft force applied to such single or double trees will be directlyimposed upon the draft rope or cable. By the use of the improveddraftequalizer side draft will be prevented, with well-known advantagesin drawing machines or other devices in performing certain classes ofwork.

To suit various applications, changes in the ing a horizontally-disposedpulley therein located at one side of the rear end of the pole,

a brace secured to the outer end of the support and to the pole inadvance of the point of attachment of the latter to the bar, bracesextending from the pole in rear of the bar to the outer ends of thelatter, and a draft ropeor cable engaging the pulleys in the ends of thebar and in the support and projected in advance of the ends of the barfor attachment of draft devices.

In testimony whereof I affix my signature in presence of two witnesses.

PATRICK J. GRADY. Witnesses:

RAY BURT, S. R. MOORHEAD.

